Police in Saudi Arabia have killed seven militants believed to be involved in two earlier suicide car bombings in Riyadh Wednesday.

The militants were killed when police raided a house in the Saudi capital.

The raid came hours after two militants tried to drive explosive-filled vehicles into the Saudi Interior Ministry and a training facility. Both vehicles exploded outside the facilities after the attackers failed to get past security forces.

The two suicide bombers were killed and several people were injured in the attacks - the latest carried out by Islamic militants in the oil-rich kingdom.